You would need to mill both the intake and the headers. If you didn't do both, getting the seal with the gasket and all the triangle washers and nuts would be a nightmare.
Mike Sargent purchased a set of Hyper Pak exhaust manifolds that someone had done just what you described but cut on the bottom side. Why I have no idea.

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Hyper_pak

Mark Goodman supplied this link for stainless collectors and parts.
Very nice stuff.
Burns Stainless
https://burnsstainless.com/

I think this is the supplier for these collectors:

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Hyper_pak

Whose rail is that in the picture?


Greg

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http://www.youtube.com/hyperpack

The collectors for mine came from Schoenfeld.

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Official Cookie and Mater Tormentor.

Jeff Kendall.

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Hyper_pak

Dug out an 85 Clifford catalog.
Under Race Headers, "Modifications required if used with Weber carburetor assembly. Special order on request"
Under Side Draught Manifolds, "Modifications to headers may be required"

Nice.

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Hyper_pak

Aren't race cars fun?

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Official Cookie and Mater Tormentor.

Back then Jack was still alive, and he let you know it wasn't "plug and play".

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

I have at least one pair of Clifford shorty headers that bolted right up to a 3X2 weber setup. I think (hope) they are the ones still on the 66 Valiant (where I originally ran the Clifford/Weber intake) and they will bolt up once again...

Lou

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Home of Slant6-powered fun machines since 1988

And I have a set of shorties and they don't bolt up.
Close but they need "Modifications" to clear.
So I guess it's one of those what day did they weld each set up.

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Hyper_pak

Truthfully, If you build a Clifford intake and you build a Clifford header, those to pieces should "sing in perfect harmony"! No excuses, just make them right. We are talking about a couple bends, that's it. It is not reinventing the wheel!! The Clifford big tube race headers I was so happy to get, were unreconizable as a performance piece after I got through beating 3 tube half shut. And that was to fit their 4 barrel intake, not the Webers. Never used it until I had Robbie fix it right. Sorry for the rant!!

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

I have a never installed Clifford intake I had to grind to get it to fit my Clifford headers too.

Race cars is fun.

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Official Cookie and Mater Tormentor.

I have Clifford shorties and a Clifford intake and I don't remember grinding anything. Being lucky rocks! Being forgetful helps.

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“Buy the ticket, take the ride.”
― Hunter S. Thompson

They mean the Clifford Weber 3X2 intake. All Clifford headers fit the standard 4bbl intakes.

Lou

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Home of Slant6-powered fun machines since 1988

See my post above . Their race tube headers do not fit their 4 barrel either. At least mine did not. (Obviously they don't make them anymore anyway.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6